Which of these would most likely cause a mutation? A the placement of ribosomes on the endoplasmic reticulum B the insertion of a nucleotide into DNA C the movement of transfer RNA out of the nucleus D the release of messenger RNA from DNA
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Step 1: Mutations occur when there is a change in the nucleotide sequence of DNA. Show more…
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Which of the following is not made out of RNA? a. the carriers that shuffle amino acids to a growing polypeptide strand b. the ribosome C. the messenger molecule that provides the code for protein synthesis d. the intron
To facilitate the movement of mRNA from the nucleus into the cytoplasm, what is added to the 3' end of mRNA? a) Ribosomes b) Transcription factors c) A cap of modified nucleotides d) Modified tRNA molecules e) A Poly-A tail
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Which of the following statements best explains the fact that a mutation in a cell's DNA does not always result in an error in the polypeptide produced from that DNA sequence? (A) Some polypeptides are produced by a code other than a nucleic acid code. (B) The nucleolus can repair damaged DNA. (C) More than one codon code for the same amino acid. (E) Scientists have no idea why this phenomenon occurs.
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